Which multiplexing technique used to transmit digital signals?

• A. Fdm
• B. Tdm
• C. Wdm
• D. Fdm & wdm

If there are n signal sources of same data rate, then the TDM link has _______ slots.

• A. N
• B. N/2
• C. N*2
• D. 2n

If link transmits 4000frames per second, and each slot has 8 bits, the transmission rate of circuit this TDM is _________

• A. 32kbps
• B. 500bps
• C. 500kbps
• D. 32bps

The state when dedicated signals are idle are called __________

• A. Death period
• B. Posion period
• C. Silent period
• D. Stop period

Multiplexing provides _________

• A. Efficiency
• B. Privacy
• C. Anti jamming
• D. Both efficiency & privacy

In TDM, the transmission rate of a multiplexed path is always _______ the sum of the transmission rates of the signal sources.

• A. Greater than
• B. Lesser than
• C. Equal to
• D. Equal to or greater than

In TDM, slots are further divided into _________

• A. Seconds
• B. Frames
• C. Packets
• D. Bits

A local telephone network is an example of a _______ network.

• A. Packet switched
• B. Circuit switched
• C. Bit switched
• D. Line switched

Most packet switches use this principle ____________

• A. Stop and wait
• B. Store and forward
• C. Store and wait
• D. Stop and forward

If there are N routers from source to destination, the total end to end delay in sending packet P(L-> number of bits in the packet R-> transmission rate) is equal to ______________

• A. N
• B. (n*l)/r
• C. (2n*l)/r
• D. L/r